This VB.NET Project is based on this BASIC program below, written for Commodore Plus4 by Daniel A Nagy. Originally he wrote it for PRIMO (a Hungarian 8bit computer).
It was then implemented in VB.NET just to better understand the algorithm.
Additional links
The algorithm in shadertoy: https://www.shadertoy.com/view/Xl3fR4
Advanced shadertoy: https://www.shadertoy.com/view/4lcfR4